EX-3342 tests: correct Lustre version in test skip checks in sanityn

EX-3342 tests: correct Lustre version in test skip checks in sanityn

Many patches land to the EXAScaler branches as ports from
other branches.  Sometimes the tests that are included with
the ported patches check the version of Lustre to ensure
that the feature it tests exists in this version of Lustre.
These version values are not always changed when patches
are ported from one branch to another.

Change Lustre test suite version checks to be relative to
this branch. Sanityn tests 43j, 81c and 84 were modified.

Fixes: 1c01d0867da ("LU-10235 mdt: mdt_create: check EEXIST without lock")
Fixes: 23fa920b0ce ("LU-13437 mdt: rename misses remote LOOKUP lock revoke")
Fixes: c4a91e08b1e ("LU-12485 obdclass: 0-nlink race in lu_object_find_at()")

Test-Parameters: env=ONLY="43j 81c 84" serverversion=2.10.8 \
serverdistro=el7.6 testlist=sanityn
Test-Parameters: env=ONLY="43j 81c 84" clientversion=2.12.6-ddn42 \
testlist=sanityn
Test-Parameters: env=ONLY="43j 81c 84" serverversion=2.12.6-ddn42 \
testlist=sanityn
Test-Parameters: trivial env=ONLY="43j 81c 84" testlist=sanityn

Lustre-change: https://review.whamcloud.com/45537
Lustre-commit: c525d9367976fe38fd6fba6fdda8c3a9df6fd6e1

Signed-off-by: Alena Nikitenko <anikitenko@ddn.com>
Change-Id: I3116af827889ccc5a23434f9a253f3115b56dfb4
Reviewed-on: https://review.whamcloud.com/46186
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>